Update changelog

CHANGELOG.md

@@ -1,6 +1,7 @@
 # Rojo Changelog
 
 ## Unreleased Changes
+* Support for a `$schema` field in all special JSON files (`.project.json`, `.model.json`, and `.meta.json`) ([#974])
 * Projects may now manually link `Ref` properties together using `Attributes`. ([#843])
  	This has two parts: using `id` or `$id` in JSON files or a `Rojo_Target` attribute, an Instance
     is given an ID. Then, that ID may be used elsewhere in the project to point to an Instance
@@ -85,6 +86,7 @@
 [#886]: https://github.com/rojo-rbx/rojo/pull/886
 [#911]: https://github.com/rojo-rbx/rojo/pull/911
 [#915]: https://github.com/rojo-rbx/rojo/pull/915
+[#974]: https://github.com/rojo-rbx/rojo/pull/974
 
 ## [7.4.3] - August 6th, 2024
 * Fixed issue with building binary files introduced in 7.4.2